Product Description:
The Arduino Leonardo R3 is a powerful microcontroller board based on the ATmega32u4, designed for beginne, hobbyists, and professionals in electronics and embedded systems. With 20 digital I/O pins (7 PWM outputs, 12 analog inputs), a 16 MHz crystal oscillator, micro USB connection, power jack, ICSP header, and reset button, it provides everything needed to start building projects instantly.
Unlike earlier Arduino boards, the Leonardo features native USB communication, eliminating the need for a secondary processor. This allows it to appear to your computer as a keyboard, mouse, and virtual serial COM port, making it ideal for DIY projects, automation, robotics, and human-computer interaction applications.
Key Features
✅ Microcontroller: ATmega32u4
Native USB Communication – Acts as keyboard, mouse, or virtual COM port
⚡ 20 Digital I/O Pins – 7 PWM outputs & 12 analog inputs
Crystal Oscillator: 16 MHz for stable performance
Operating Voltage: 5V, Input 7–12V (recommended)
Onboard Interfaces: Micro USB, power jack, ICSP header, reset button
Compatible With: Arduino IDE & 100% Pro Micro compatible
Technical Specifications:
Attribute
Details
Microcontroller
ATmega32u4
Operating Voltage
5V
Input Voltage (Recommended)
7–12V
Input Voltage (Limits)
6–20V
Digital I/O Pins
20
PWM Channels
7
Analog Input Channels
12
DC Current per I/O Pin
40 mA
DC Current for 3.3V Pin
50 mA
Flash Memory
32 KB (4 KB used by bootloader)
SRAM
2.5 KB
EEPROM
1 KB
Clock Speed
16 MHz
Dimensions
68.6 × 53.3 mm
Weight
20 g
Applications
Robotics & automation
Human-computer interaction (keyboard/mouse emulation)
Embedded system development
Sensor interfacing & control systems
DIY electronics & prototyping
Package Includes
1 × Arduino Leonardo R3 Board
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